Apparatus

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sensors Mode-S transponder

7C0404

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-A2U · EMBRAER ERJ-190-100

Hex
7C0404
Octal
37002004
Decimal
8,127,492
Country
AU
Tail
VH-A2U
Type
E190
No current signal · last broadcast 23h ago
Flights observed
116
Distinct callsigns
20
Country
AU
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S 7C0404.

Country allocation

The ICAO 24-bit address 7C0404 falls within the block assigned to Australia (AU) by ICAO Annex 10, Volume III. Every aircraft registered in Australia receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
UTY4823 - 10 2026-07-15
UTY4821 Alliance Airlines 7 2026-07-16
UTY713 - 4 2026-07-01
UTY712 Alliance Airlines 4 2026-06-16
QLK1932 - 4 2026-06-09
UTY4822 Alliance Airlines 3 2026-04-17
QLK6281 - 3 2026-06-18
QLK1971 - 3 2026-07-09
UTY7240 - 2 2026-07-12
QLK1990 - 2 2026-07-08
QLK1988 - 2 2026-05-15
QLK1982 - 2 2026-06-09
QLK1981 - 2 2026-06-08
QLK1972 - 2 2026-07-09
QLK1874 - 2 2026-05-17
QLK1846 - 2 2026-07-06
QLK1844 - 2 2026-07-11
QLK1830 - 2 2026-06-15
QLK1829 - 2 2026-06-12
QLK1828 - 2 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 UTY4821 BNE → ASP Jul 16, 19:50 UTCJul 17, 03:10 UTC7h 20m
2026-07-16 QLK1810 - Jul 16, 10:50 UTCJul 16, 13:05 UTC2h 15m
2026-07-16 QLK1809 BNE → ADL Jul 16, 07:15 UTCJul 16, 09:30 UTC2h 15m
2026-07-15 UTY4823 BNE → BNE Jul 15, 20:25 UTCJul 16, 04:10 UTC7h 45m
2026-07-15 UTY3379 EMD → BNE Jul 15, 12:00 UTCJul 15, 12:35 UTC35m
2026-07-15 UTY3378 - Jul 15, 09:15 UTCJul 15, 09:50 UTC35m
2026-07-14 QLK7888 BNE → BNE Jul 14, 06:20 UTCJul 14, 09:00 UTC2h 40m
2026-07-13 UTY4821 BNE → ASP Jul 13, 19:50 UTCJul 14, 03:30 UTC7h 40m
2026-07-12 UTY7240 BNE → BNE Jul 12, 22:35 UTCJul 13, 05:05 UTC6h 30m
2026-07-12 QLK1862 BNE → BNE Jul 12, 02:55 UTCJul 12, 07:05 UTC4h 10m
2026-07-11 QLK1844 BNE → BNE Jul 11, 01:05 UTCJul 11, 04:01 UTC2h 55m
2026-07-10 QLK7880 BNE → BNE Jul 10, 03:10 UTCJul 10, 06:05 UTC2h 55m
2026-07-10 QLK1823 - Jul 10, 00:45 UTCJul 10, 01:55 UTC1h 10m
2026-07-09 QLK1822 - Jul 9, 22:25 UTCJul 9, 23:50 UTC1h 25m
2026-07-09 QLK1972 ABX → BNE Jul 9, 03:20 UTCJul 9, 04:55 UTC1h 35m
2026-07-09 QLK1971 BNE → ABX Jul 9, 00:40 UTCJul 9, 02:25 UTC1h 45m
2026-07-08 QLK1990 BNE → BNE Jul 8, 04:45 UTCJul 8, 09:45 UTC5h 0m
2026-07-08 QLK1948 - Jul 8, 02:05 UTCJul 8, 03:35 UTC1h 30m
2026-07-07 QLK1947 - Jul 7, 23:10 UTCJul 8, 00:40 UTC1h 30m
2026-07-06 UTY4823 BNE → AYQ Jul 6, 20:40 UTCJul 7, 04:15 UTC7h 35m
2026-07-06 QLK1846 BNE → BNE Jul 6, 05:20 UTCJul 6, 07:55 UTC2h 35m
2026-07-02 UTY4823 BNE → AYQ Jul 2, 20:10 UTCJul 3, 06:55 UTC10h 45m
2026-07-01 UTY713 - Jul 1, 05:50 UTCJul 1, 06:25 UTC35m
2026-06-22 QLK1888 - Jun 22, 07:10 UTCJun 22, 08:44 UTC1h 35m
2026-06-22 QLK1972 ABX → BNE Jun 22, 02:45 UTCJun 22, 04:19 UTC1h 35m
2026-06-22 QLK1971 BNE → ABX Jun 22, 00:10 UTCJun 22, 02:00 UTC1h 50m
2026-06-21 QLK1921 - Jun 21, 22:00 UTCJun 21, 22:24 UTC25m
2026-06-21 QLK1920 - Jun 21, 19:55 UTCJun 21, 20:29 UTC35m
2026-06-21 QLK6285 ABX → BNE Jun 21, 08:20 UTCJun 21, 10:19 UTC2h 0m
2026-06-20 QLK1971 BNE → ABX Jun 20, 23:39 UTCJun 21, 01:19 UTC1h 40m
2026-06-19 QLK1986 - Jun 19, 09:34 UTCJun 19, 10:39 UTC1h 5m
2026-06-19 QLK1985 - Jun 19, 07:34 UTCJun 19, 08:29 UTC55m
2026-06-19 QLK1827 - Jun 19, 05:19 UTCJun 19, 06:29 UTC1h 10m
2026-06-19 QLK1826 - Jun 19, 03:09 UTCJun 19, 04:34 UTC1h 25m
2026-06-19 QLK1823 - Jun 19, 00:49 UTCJun 19, 01:54 UTC1h 5m
2026-06-18 QLK1822 - Jun 18, 22:25 UTCJun 18, 23:50 UTC1h 25m
2026-06-18 QLK6281 - Jun 18, 10:55 UTCJun 18, 12:10 UTC1h 15m
2026-06-16 UTY712 BNE → CNJ Jun 16, 22:05 UTCJun 16, 22:40 UTC35m
2026-06-15 UTY4821 BNE → ASP Jun 15, 19:39 UTCJun 16, 03:00 UTC7h 20m
2026-06-15 QLK1831 - Jun 15, 09:49 UTCJun 15, 11:05 UTC1h 15m
2026-06-15 QLK1830 - Jun 15, 07:40 UTCJun 15, 09:00 UTC1h 20m
2026-06-15 QLK1844 BNE → BNE Jun 15, 01:00 UTCJun 15, 03:35 UTC2h 35m
2026-06-14 QLK1872 BNE → BNE Jun 14, 20:15 UTCJun 14, 23:25 UTC3h 10m
2026-06-12 QLK1829 - Jun 12, 07:35 UTCJun 12, 08:55 UTC1h 20m
2026-06-12 QLK1828 - Jun 12, 05:15 UTCJun 12, 06:25 UTC1h 10m
2026-06-11 UTY4823 BNE → AYQ Jun 11, 20:00 UTCJun 12, 04:00 UTC8h 1m
2026-06-10 UTY4823 BNE → AYQ Jun 10, 20:00 UTCJun 11, 03:50 UTC7h 50m
2026-06-09 UTY713 CNJ → BNE Jun 9, 22:10 UTCJun 10, 06:15 UTC8h 5m
2026-06-09 QLK1932 - Jun 9, 09:35 UTCJun 9, 12:25 UTC2h 50m
2026-06-09 UTY3385 BNE → MEL Jun 9, 03:00 UTCJun 9, 07:50 UTC4h 50m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the VH-A2U page for operator, model, and routing details .

Mode-S 7C0404 frequently asked

What is Mode-S code 7C0404?
7C0404 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-A2U.
Where is Mode-S 7C0404 registered?
Mode-S code 7C0404 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C0404 broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C0404, octal 37002004, decimal 8,127,492.
What flights does 7C0404 operate?
Mode-S 7C0404 has broadcast 20 distinct callsigns, including UTY4823, UTY4821, UTY713, UTY712, QLK1932.